Gas stove and appliances



26, 1938. F, CABRERA 2,115,007

GAS STOVE AND APPLIANCES Filed July 14, 1954 2 Sheets-Sheet 1 P ro a rwf m m JTSCA ATTORNEY.

April 26, 1938. Q P. F. CABRERA GAS STOVE AND APPLIANCES Filed July '14, 1934 2 sheets-shape BY Je m x r.

Patented Apr. 26, 1938 UNITED STATES PATENT OFFICE 2,115,007 GAS s'rovE AND APPLIANCES Pedro F. Cabrera, New York, N. Y. Application July 14, 1934, Serial No. 735,157 3 Claims. (01. 175-11 5) This invention relates to an improved device for igniting gas burners of stoves or other equipment, in which gaseous fuel is consumed, and its leading. object is to provide a-device, which will produce a spark, when the gas or fuel valve is turned on, but which will remain neutral or inactive, when the gas valve is turned ofi,

Another object of the invention is the provision of a. gas burner igniter, which may be wired} directly to the service wires of a house or to' an .actuate certain connecting parts transferringmotion to the movable electric contact member in such manner, that the gap-sparking contact member will be operated only, when opening the gas valve, but will not be operated when the gas valve is shutting off the gas or fuel flow.

Still another object of the invention is the provision of a resilient sparking electrode, which will effect a wiping action against the gas burner, so as to produce sparks when moved across the burner.

With the above and other objects in view-the invention relates to certain new and useful constructions, combinations and arrangements of parts, cle'arly described in the following specification, and fully illustrated in the drawings, in which:

Figures 1 and 2 are a top view and a side elevation respectively of a burner provided with an igniter according to the present invention;

Figures 3 and 4 are vertical sections through the device in the line 33 in Figure 1, seen in the direction of the arrows, Figure 3 showing the parts in a position corresponding to Figure 1, and Figure 4 showing them after turning the cock for 90 from valve closing to valve opening position;

Figures 5, ii, 8, 9 are views from below against the new igniting device, Figure 5 showing the position of the parts when the gas valve cock is closed; Figure 6 showing their position when the valve cock is partly opened; Figure 8 showing their position when the valve cock is fully opened;

the parts, carrying hub 32, mounted to pivot on the housing of the Figure 9 showing their position when the valve cock is being closed, but not yet fully closed;

Figure 7 is a side elevation of the sparking device in a position, which corresponds to Figure 6, shortly before the sparking action;

Figure 10 shows in perspective the electric gap sparking member and the parts carrying it;

Figure 11 shows a longitudinal section through the electric gap sparking member.

Referring now in drawings,rwhich illustrate a preferred embodiment of the invention, the gaseous burner 2| of a standard type is supplied, with fuel through the ipe 22,fro 1n the Bunsen burner 23. The gaseous 15 fuel flows to the bunsen 23 through the valve 24, which receives the fuel from the main supply pipe 25. The valve 24 is turned by means of the handle 26, and the shaft of the valve is equipped with an arcuate arm or pin 21, which is hooked into the one end of link 23 is pivotally connected at 29 with the arm 30, which is,rigidly attached to the triangular shaped cam 3|, respectively to its column shaped valve 24. Preferably the cam 3| is mounted so that it will rock in a horizontal plane.

The cam 3| is formed with a curved slot 33, which receives the end pin 34 of the pull and push rod 35. This pin is adapted to slide in the 3 slot from its one end to the other end, if the cam is swung reciprocatingly around its pivotal axis. The push and pull rod is surrounded in its middle part by a'coiled spring 36, which is secured with its one end to the rod or to a stop 31 whereas the other end of the coiled spring engages a bearing forming sleeve 38, which is mounted for pivotal movement on a supporting cross pipe 39, forming part of the stove or burner frame.

, The push and pull rod extends through and 40 beyond this bearing sleeve 38, and its end is provided with a terminal hook 40, which is adapted to engage the swingable arm 4|. This arm 4| is fixed on an arm-carrying sleeve 42 Fig. 11,

which is turnable within the capsular member 43, 45

which is supported by the extension 44 of the supporting cross pipe 39.

The swingable arm 4| is tubular and contains an insulated electrical wire 45, which is soldered or otherwise electrically contact block 46,- which is enclosed by the in- 4 sulating sleeve 41 within the arm carrying sleeve 42. The capsular member 43 is formed with a slot 48, to permit the arm 4| together with its sleeve'42 to swing for a limited angle, and a coiled r 10 detail to the accompanying the link member 28. This 20 thereon, 35

connected to the metal with its ends to this member, 43 and to the sleeve 42 is adapted to exert torsional tension in the arm" carrier member 42, so as to hold the swingable arm 4| normally in one of its two extreme positions, so that it is normally located distantly of the burner 2|, where it is inoperative. The block 46 is engaged by a countercontact block 50, which is enclosed, by, the insulating sleeve 5|, and is pressed into good electrical contact with the first block '46 by the means of the coiledpressure spring 52. -An electrical wire 53 (Fig. 1) extends through the cross pipe 39 and is electrically connected to'the counter-contact block 53, so that the electrical current will flow from the wire 53 to the wire 45. By turning the two caps 50, ii. on the two ends of the capsular member 43 the tension of the springs 43 and 52 in this member may be regulated so as to ensure good contact between the blocks 46 and 50, and to regulate the swinging movement of the arm 4|.

The outer part of the wire 53 is provided with a resistance 54 of any suitable type, and it belongs to the ignition circuit branched from any suitable electric energy system, which circuit includes the plug '56, the wire 53, the other wire 55, having a suitable fuse 51 and being electrically connected to the cross pipe 35, the burner 2|, and the gap sparking device. This gap sparkingdevice comprises the swinging arm'4l, the end of which is bent and equipped [with a sleeve 53, to which an extremely flexible metal coil spring 59 is detachably connected. This spring 59, be-

ing fed-electrically. -by the wire 45, serves as an ignition sparking electrode, which presents a series of helical contact points, when by, a swinging movement of the arm 4| this coil scratches on the discharge mouthpiece of the burner 2|. From the described construction follows the following working of the new igniting device according. to this invention:

When the fuel flow controlling valve 24 is in a closed position, the difierent parts will occupy the positions shown in the Figures 1, 2, 3, and 5. In particular it is to be denoted, that then the link 28 rests, as Figure "3 shows, on that part of the are shaped arm or pin 21, which is nearest to the shaft of the valve 24, and the end 34 of the push and pull rod.35 rests in that end of the slot 33, which is at the comer 32 of the cam 3|. The

' hook 40 at the other end of the rod 35 is close behind the swingable arm 4| of' the sparking device. when by the handle 25 the cock of the gas valve 24 is turned into flow opening position (change from Figure 3 to Figure 4) then the link 28, gliding towards the remote end of the arcshaped arm of pin 21, swings the arm. with the column 32 and the cam 3| for round their pivotal axis; in consequence of this the pin 34 with the rod35 hinged to it is pulled from the position of Figure 5 to "the position of Figure 6,

whereby the rod 35, besides shifting longitudinal- 1y swings round the pivot of the sleeve 33. 'The hook 43, gripping the arm 4|, swings it over the burner 2| into the position of the Figure 7. The finishing of the valve opening operation brings the arm 3| from the position of the Figure 6 into the position of Figure 8; the pin 34 slides in the slot 33 into the other corner of this slot at the other corner 53 of the cam 3|, as the rod 55- is under the pull' of the spring 36, and the'hook 43,

snappingback into the rear position shown on Figure 2, whereby the electrode 53 moves scratchingly over the burner 2| and produces the gas igniting sparks. The'n during the time as the burner 2| again in the position shown in Figure 2, out of the way of the flames issuing from the burner.

- When the burner is-to be shut, then the shifting the hook 40 at its end swings out to the other side 'as indicated by the dotted and arrowed curves in Figure 9, so that this time the hook 40 does not catch the arm 4|, and the arm 4| with the electrode 59 remain in rest and inoperative, away from the flames and from the hot burner head. At the end of the valveclosing operation the pin 34 with the rod 35 and the hook 40 have snapped back into their original positions shown in the Figures 1 and 2.

I claim:

1. An ignition device for gas burners, comprising: a swinging arm; a flexible spring electrode, carried by the end of the arm; means for supporting the arm for swinging movement, so that the electrode will have upper side of the burner; a bearing, pivotally mounted and adapted to swing round its pivot; a push and pull rod, mounted to slide through the bearing, and adapted to swing together with the bearing during its sliding movement through the bearing: a gas valve; mounted and having a curved slot spaced from the pivotal axis of the plate, so that the ends of the slot-are approximately at equal distance from said axis, and the intermediate portion of the slot is nearer to the axis; than the ends of the slot; means connecting the valve with the plate, so as to cause swinging movements of the plate in corwiping contact with the v a cam-like plate, pivotally is burning, the delicate electrode 53 is respondence to turning movements of the valve;

a slidably engaging connection of the one end I of the said rod with the slot in the said plate;

and a hook on the other end of the rod, to engage the swinging arm and to actuate the same to ignition position.

2. An ignition device for gas burners, comprising: a swinging arm; a flexible spring electrode, carried by the end of the arm; means for supporting the arm for swinging movement, so that the electrode will have wiping contact with the upper side of the burner; a bearing, pivotally mounted round its pivot; a push and and adapted, to swing slide through the bearing,

pull rod, mounted to Y and adapted to swing together with the bearing during its sliding movement of the rod and into a swinging of the rod first in the one direction and then in the opposite direction; and a hook on the other end of the rod, to engage the swinging arm and to actuate the same to ignition position.

3. An ignition device for gas burners, comprising: a swinging arm; a flexible spring electrode, carried by the end of the arm; means for supporting the arm for swinging movement, so that the .electrode will have wiping contact with the upper side of the burner; a bearing, pivotally mounted and adapted to swing round its pivot; a push and pull rod,-mounted to slide through the bearing, and adapted to swing together with the bearing during its sliding movement through the bearing; aspringtoeausethelongitudinalsliding movement of the rod; a gas valve; a camlike plate pivotally mounted and havingja curved slot spaced from the pivotal axis of the plate, so that the ends of'the slot are approximately at equal distance from said axis and the intermediate portion of the slot is nearer to the axis, than the ends of the slot; an arcuate pin extending from the turning part of the valve; an arm consistent with the camlike plate, so as to be 10 adapted to swing it round its pivotal axis; a conmeeting link pivoted with its one end to the last said plate-swinging arm, and hooked with its eyeformed other end on the said arcuate pin; a slidably engaging connection of the one end of the said rod with the slot in the camlike plate; and a'hook on the other end of the rod, to engage the swinging arm and to actuate it to ignition position.

PEDRO F. CABRERA. 

